The paper revisits the determination of light element abundances from Big Bang Nucleosynthesis (BBN) to update the baryon abundance estimate as of early 2024. The primary focus is on the derived baryon abundance, which is influenced by the assumed Deuterium burning rates. The theoretical ab-initio calculations favor smaller baryon abundances, while experimentally determined rates suggest higher abundances. The recently released PPyMordial code, which marginalizes over a wide range of nuclear rates, provides a conservative estimate of the baryon abundance at \( \Omega_bh^2 = 0.02218 \pm 0.00055 \) using PDG-recommended light element abundances, and \( \Omega_bh^2 = 0.02231 \pm 0.00055 \) with the most recent Deuterium determination. Additional ultra-relativistic relics are constrained to \( \Delta N_{\text{eff}} = -0.10 \pm 0.21 \). The paper also discusses the impact of the Helium anomaly from the EMPRESS survey, which is treated as an outlier until further evidence emerges. The inclusion of additional relativistic degrees of freedom does not significantly bias the constraints on the baryon abundance. The author concludes that the field has made significant progress in characterizing uncertainties and biases, and future advances are expected from laboratory measurements of Deuterium burning rates.The paper revisits the determination of light element abundances from Big Bang Nucleosynthesis (BBN) to update the baryon abundance estimate as of early 2024. The primary focus is on the derived baryon abundance, which is influenced by the assumed Deuterium burning rates. The theoretical ab-initio calculations favor smaller baryon abundances, while experimentally determined rates suggest higher abundances. The recently released PPyMordial code, which marginalizes over a wide range of nuclear rates, provides a conservative estimate of the baryon abundance at \( \Omega_bh^2 = 0.02218 \pm 0.00055 \) using PDG-recommended light element abundances, and \( \Omega_bh^2 = 0.02231 \pm 0.00055 \) with the most recent Deuterium determination. Additional ultra-relativistic relics are constrained to \( \Delta N_{\text{eff}} = -0.10 \pm 0.21 \). The paper also discusses the impact of the Helium anomaly from the EMPRESS survey, which is treated as an outlier until further evidence emerges. The inclusion of additional relativistic degrees of freedom does not significantly bias the constraints on the baryon abundance. The author concludes that the field has made significant progress in characterizing uncertainties and biases, and future advances are expected from laboratory measurements of Deuterium burning rates.